mainNav = function() {
	navRoot = document.getElementById("navigation");
	for (i=0; i<navRoot.childNodes.length; i++) {
		node = navRoot.childNodes[i];
		if (node.nodeName=="LI") {
			node.onmouseover=function() {
				this.className+="_over over";
			}
			node.onmouseout=function() {
				this.className=this.className.replace("_over over", "");
			}
		}
	}
}


onLoadFunctions = function() {
	mainNav();
}


window.onload=onLoadFunctions;